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copper head gaskets any good?

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Old 10-08-2008, 02:37 AM   #1
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Default copper head gaskets any good?

just wandering if any one here has used copper head gaskets on there high performance rebuild ?
is copper a good idea?
they can be reused ?
are they less likely to blow out/leak ?
iv got a Corteco brand .20" head gasket to use but unsure if i should get some thing else.
the felpro mls brand seems of good quality ?
any thoughts would be great to hear.
tia
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Old 10-08-2008, 02:42 AM   #2
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MLS is good, make sure your machinist leaves a very smooth finish, I mean real smooth. Once they are on dont take them off.
BLOCKMAN can tell you more on this, aka the "Professor".


Leave the composite (very common) and copper comments up to the others.
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Old 10-08-2008, 03:33 AM   #3
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thanks for your help man.
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Old 10-08-2008, 04:00 AM   #4
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Copper is good if you back tork the gasket.If you don't they will leak and you will have problems.
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Old 10-08-2008, 04:12 AM   #5
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hi thanks for your reply ,what does" back torque "the gasket mean?
and is it a expensive job to get either block or heads o,ringed?
which is better,get heads or block done when o,ring is concerned?
tia
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Old 10-08-2008, 07:31 AM   #6
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Quote:
Originally Posted by 8 t/b vet View Post
is it a expensive job to get either block or heads o,ringed? which is better, get heads or block done when o,ring is concerned? tia
depending on who is doing the job, not that expensive maybe around 150.-175. for either. It has been argued which is better doing the cyl. head or block. If I were choosing one or the other, I would do the block.

Last edited by mseven; 10-08-2008 at 07:35 AM.
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Old 10-08-2008, 07:29 PM   #7
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That means tork the head gaskets back wards after you did your original tork.I would "o"ring the block.
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Old 10-08-2008, 10:11 PM   #8
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They also make a copper gasket spray that can be used with steel gaskets for iron heads. I dont know if it makes a difference or can be compared to the copper gaskets.
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Old 10-09-2008, 12:59 AM   #9
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Default gaskets

my 86 had a steel shim gasket from th factory. It lasted 100,000 miles.
That was iron to iron.
My 89 had black composits from factory, that was alum. to iron.
My machinist uses a steel shim and a composite to get deck height.
I would guess it's all in what makes you feel comfortable.
Copper head gaskets to me would be for low compression engines as the copper would burn back in a modern Hi-po engine.
otherwise, why would they use steel to line the composite gaskets and stel shim from the factory?
Copper on the exhaust where high heat is ok, because there's no combustion pressure, but high heat plus pressure makes copper old school.
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Old 10-09-2008, 04:37 AM   #10
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hi fellas
i think i might give the copper head gasket a miss.
and i will get a pair of cometic mls gaskets @ $ 86.16 each.
iv got 4.060" pistons and the tech guy said to buy the 4.100" bore size.
they have 0.27" gaskets which are the thinnest they have.
part # h1518sp1027s.
thanks for your replies.
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